Improvement in anti-friction stampers for metallic ores



No. 42,340. PATENTED APR. 19, 1864.

J. A. BERTOLA. ANTIFRIGTION STAMPER FOR METALLIC ORESQ UNITED STATEPATENT QFFICE- JOSEPH a. BERTOL'A, 0F nnwronmuv.

Specification armina mt of Letters Patent nug'a aaao, War 19,1864.

To all whom it may concern/:

- Be it known that I, Josnrn A. BERTOLA, .of the city and State of NewYork, have in vented, made, and applied to use a certain new and usefulImprovement in Anti-Friction Stampers for Metallic Ores and I do hereby'deolarethe following to be a full, clear, and exact description of mysaid invention, refer ence being bad to the'annexed drawings, makingpart of this specification, wherein- Figure l is a vertical section ofmy said stampers, and Fig. 2 is an elevation of the same on the sidewhere the ores are delivered. 7 Similar marks of reference denote thesame parts.

Stampers have heretofore been constructed to be raised and droppedwithin a mortar for the pulverization of metallic ores, said ores beingsupplied to such mortar and thence taken away for separation orconcentration.

The nature of my said invention consist-sin the combination of a movablebottom plate and elastic bed with a hopper, in which ,the ores aresupplied through a chute on one side and washed away through a spout onthe other side after being pulverized.

I also make use of bars or handles to the Stampers formed of two stripsor plates of metal, between which is a roller acted on bya camfor-raising said stampers, and said bars are also guided by rollersstanding between them, so that each handle to the stampers andtherollers applied to the same are independent of the adjoining stampersor rollers; hence friction is not produced by the Stampers moving onopposite sides of the same roller, andin case the frame becomes untruethe stampen rods cannot biud.-

In the drawings, (t is alframeof suitable size and shape, carrying the.shaft 1), upon which are arms 0 c,'so placed in advance of each other astobe successively operative in raising the stampers. d d are thestampers, extending up from which are the bars e e, by which theStampers are raised. Each stamper has two of these bars 0 attached toit, and said bars are connected and kept the proper distance apart byrivets through a block or blocks, 1, between said bars, and said barsare united at their upper ends by rivets or screws through-the block 2.Between these bars 6 a roller, f, is provided on an axle passing throughthe bers,-and this roller is taken by.

the cam; or cams o allotted to the particular stamper, so that thecamsrotate between the bars of the respective stampers, and actingagainst the said rollers raise them and the stampers in succession, andthey fall upon the ores placed in the hopper below, as hereinafterdescribed.

g g are cross-bars carrying rollers h k, that set between the bars ofthe respective stampers below the rollers f, and ii are similar bars,carrying rollers k k, that are above the rollers f. These rollers allowthe stampers to be raised successively and drop with but very littlefriction. The red lines, Fig. 2, illustrate the positions to which thestampers are successively raised.

The hopper or mortar in which'the-ore is contained is formed of sheetmetal with an inclined side, 1, ends m m, bottom 11, and vertical side0, and in this side 0 is the delivery pipe or spout q. The hopper hasalso a vertical division,p, within it, parallel, or nearly so, to theside 0, between which and said side 0 the Stampers d operate, and anopening is left between the bottom edge of this division 10 and thebottom it of the hopper, so that the ore supplied in the chutebetween 1) and I shall gradually work beneath the stamers and bepulverized anddelivered at the opening q.

Beneath the hopper, between that and the .sill or bed-block of the framea, is a layer of india-rubber or similar elastic material, 3, and withinthe hopper is the anvil-plate 1', fitting the bottom of the hopper.

The stampers, as they are raised and fall upon the ores that pass inbetween said stampers and the anvil a", crush and pulverizc the saidores, and a stream of water is supplied into the hopper, as usual, and,in escapin g from the spout q, conveys away the finelypulverized ores orother substances.

The concussion of the stampers is taken on the anvil-plate T, whichplate can be replenished, when worn out, without requiring an entirelynew hopper, and the elastic layer s prevents the frame a and other partsfrom being so much shaken by the fall of the stampers as now usual, andthe elasticity thereof causes a sufficient rebound of the stampers torelieve the cams and commencing to -.raise them, and the elastic layer 8allows the hopper to be suficiently shaken by the fall of the Stampersto prevent the ore clogging.

The operations performed in my hopper are of two metallic bars, betweenwhiclij the roller continuous, and no ore can escape nntil thorf for thelifting cam is fitted, and. which hanoughly stampede idle is guided byfixed rollers g and 03, between WL at I claim, and desire to secure byLetsuch bars, as and for the purposes specified. l ters Patent, is- Inwitness whereof I have hereunto set my 1x The movable botttm pla te, r,andfelastic signature this 31st day of August, 1863. I we .9 incombination-with the hopper ormer p with hlte on one side f)r receivingthe ore JOSEPH ALOIDE to be pulverized, and with a spout on the other IWitnesses -f0'i' the delivery of such ore, as specified. LEMUEL W.SERRELL,

2, Forming the rod or handle for Stampers THOs. GEO. HAROLD.

